It's not that simple. There are multiple code branches of Windows (LDR vs GDR) and the old files can be needed for future servicing. Assuming the OP is talking about the WinSxS folder, the OP basically just irreparably broke servicing (adding/removing features and hotfixes/service packs) on this Windows install.

DO NOT DO THIS.

Have you ever tried to open one of the glued-together cases? That's by far more difficult than getting a girlfriend

You do know you can self-sign drivers and import the cert.

XP x64 is really Server 2003 "Workstation Edition" - it's compiled from the Server 2003 code, thus uses the same patches (and has the same lifecycle) as Server 2003, not XP.

http://www.atxnetworks.com/bulk-qam-to-qam-gige-analog

Does exactly what you want - it can bulk-decrypt cable channels and output them as CleaQAM. Unfortunately, if you only have 32 TVs, you likely can't afford it.

To be quite frank, Comcast doesn't care about you. 32 sets is a small setup. Something like that, or using modulators is how the big boys do it, but you're talking $10,000+ (if not $100,000+) depending on your requiements.

Where to start: Scrap all your ideas and start over.
Yes, everything you asked for can be done. The reality is though is that, with the amount of complexity you are asking for, you will be a full time sysadmin for them - you might as well quit your day job now.

Your setup is simply too complex for a non-techie (and to be honest, as a techie, I don't want to have to admin something that complex at home). You need to stop asking "can I" and ask "should I?"

Windows PCs joined to active directory can let you manage them, set logon hours, etc.

Why do you care to know if the PCs are sleeping/on/off/whatever?

A router running DD-WRT will let you deny internet access based on hours and/or PCs in a simple manner. To be perfectly honest, I hate the concept of internet filtering (by parents or otherwise) as I believe it is another step toward turning people into drones, rather than teaching them to think for themselves, so I'm not even going to offer any suggestions on that subject.

I agree with the other posters, the system you have suggested will end as follows:
1. The kids will learn how to hack around it. This can be a good thing or bad thing, depending on your point of view
2. The system is so complex it will never work and the parent will never use it as they have no clue
3. You will grow to hate it as it will take too much of your time.

Keeping in mind that you have provided almost no information in your post, this is most likely either a BIOS bug or a configuration issue on Linux - I'm leaning toward both actually. Once the OS takes over power/thermal management from the BIOS, the BIOS basically stays out of the way - so Windows is getting control over your fan and managing it.
Upon soft rebooting, I would expect the BIOS to step back in, but it sounds like this isn't happening - here is the BIOS bug. Now, you likely do not have Linux configured correctly to do thermal management, so if you only boot in Linux, the BIOS is still handling it, but if you have loaded Windows first (and your buggy BIOS has not reset it) nothing is handling it.

OBDII has a very limited code set - primarily related to emissions. When my car got "Airbag error 15" OBD2 did not help, nor was it publically documented what error 15 was, as this is not an emissions-related issue.

The tools are there and cheap for certain problems, and expensive (thousands of dollars) for the complete suite.

Depends on the call center. I work in what is effectively a call center for a large software company at the escallation site (in the US). Me and my peers love our job, Salaries get into the six-figures after you've been here for 2-3 years (not that they start low, mind you), customers don't scream at us, and we aren't taking calls as fast as we can. I have a friend that works escallations for a large PC company and it's a similar experience for him,

I completely understand that my experience is not a typical call center, but not all call centers suck.

Agreed, the onboard UPS is not new. I have a ~10 year old (I believe the CPU is a K6-233) device meant as a SOHO file/print/webserver from IBM that has a built-in gel-cell battery for UPS power just like this server does. Google is 5+ years too late.

Anyone want my prior art to invalidate the patent?

There's no need to wait for Apple - that technology exists today.
I finish my work/download my video on my Windows 7 desktop PC
I pick up my Harmony remote and walk to the TV
I hit the "Watch TV" button. Everything powers up and switches to the right input
The videos show up on my mediacenter machine hooked to the TV as it and my desktop PC are both in the same homegroup
I can select a DVD from my firewire-connected DVD changer
I can pause/rewind/watch previously recorded HDTV with my ATI Digital Cable Tuners

You could easily do this with one PC and a Media Center extender too. So $200 for an Xbox 360 + $100 for a Logitech Harmony remote. Available today.

Server core still has IE libraries - for instance, WinInet which basically is a standard internet connectivity library is there. Hell, even Hyper-V server (the OS that is free and can only run Hyper-V) will actually get offered some IE updates - because some IE components are still part of the OS. Iexplore.exe isn't there, but other chunks are there because substantial parts of the OS (and even third-party applications) use them.

Most long-distance calling cards do exactly this, and can be had for pennies a minute

If this is truly a "large school," basing your network on a single server is such a bad idea it is almost criminal, and implementations like this are what give Windows (and Linux for that matter) a bad name.

I question why you have separate networks for students and teachers, but that aside, why in the world are you giving your network a single point of failure like this? One of Active Directory's strengths is its ability to use multiple servers to achieve redundancy. Why are you running 2 domains with only one DC, and why would you design a new implementation with a single DC/LDAP server/whatever? What happens when that machine has a catastrophic software/hardware problem?

Also, change for the sake of change is a poor idea. If you have a legitimate reason to say that $FOSS_LDAP_SERVER is a better fit for your environment, that's one thing, but by not even considering that AD *MIGHT* be the best fit for your environment, you are doing your employer and clients a disservice.

Hire a consultant or someone that knows what they are doing - regardless of which platform is picked. From the question, it sounds like you don't.